Yanmar 6LY3 series, Operation Manual

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PERIODIC MAINTENANCE
98
6LY3 Operation Manual
When the following inspections are done
and any problem is found, contact your
Yanmar dealer.
1. Checking the control head:
Check that the control lever moves
smoothly.
Check that the shifting and throttle are
smooth.
2. Checking the alarm indicators:
When pressing the start switch to ON
position on the rocker switch panel, check
that the alarm window appears with the
alarm sound for about 3 seconds then
goes off (normal condition).
Check that there is no alarm message.
3. Checking the electrical harnesses:
Check for cracks, abrasions, and
damaged, loose or corroded connectors.
Check the Electronic Control
System Operation
The electric governor on the engine and
the marine gear are connected to the
control head, rocker switch panel and
display through electric devices such as
the Engine Interface Module.
Adjust the Propeller Shaft
Alignment
The flexible engine mounts are
compressed a little in the initial engine
operation which may cause centering
misalignment between the engine and the
propeller shaft.
Check for any unusual noise and vibration
in the engine / boat hull, while increasing
and decreasing the engine speed
gradually.
If there is unusual noise and / or vibration,
this maintenance requires specialized
knowledge and techniques. See your
authorized Yanmar marine dealer or
distributor to adjust the propeller shaft
alignment.
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